Hero: They just age like you and me. They are just normal human beings except that they are are bred with a better physique than the average humen. Not that they have superhuman strenght or anything, just enough to be damn good soldiers. And the fact that their navel's on the back of their neck.
The Chig ships are organic IIRC and powered by the neural energy of the pilots. Well, at least the bombers are. That was the only Chig ship ever captured in tact.
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The time is near.
There are still quite a few days remaining.
I don't care for fame, power or money...
I just want to FIGHT!
-Sanosuke Sagara